Sign in

CCDD

@ccdd-hsph.bsky.social
255 followers 54 following 110 posts

Center for Communicable Disease Dynamics. Research on mathematical modeling of Infectious Diseases. Funded opportunities for students/researchers from under-represented groups.

PostsRepliesMedia
CCDD @ccdd-hsph.bsky.social · 01/07/2026
Join us TOMORROW, July 2, from 1–2 PM ET in Kresge 502 for a seminar by Dr. Joseph Wu, Sir Robert Kotewall Professor in Public Health at The University of Hong Kong (HKU). We encourage all to attend in person. If you would like to attend remotely via Zoom, please register here: hsph.me/CCDD-JoeWu
000
CCDD @ccdd-hsph.bsky.social · 29/06/2026
Join us on July 2, from 1:00–2:00 PM ET in Kresge 502 for a seminar by Dr. Joseph Wu, Sir Robert Kotewall Professor in Public Health at The University of Hong Kong (HKU). We encourage all to attend in person. If you would like to attend remotely via Zoom, please register here: hsph.me/CCDD-JoeWu
000
CCDD @ccdd-hsph.bsky.social · 02/06/2026
Join us Thursday, June 18, from 1:00 PM ET in FXB G11, with Ruth McCabe, Infectious disease epidemiologist and WHO Liaison Fellow at Imperial College London. We encourage all to attend in person. However, if you would like to participate remotely via Zoom, please register here: hsph.me/CCDD-McCabe
111
CCDD @ccdd-hsph.bsky.social · 07/05/2026
Join us on TODAY 5/7 at 1PM ET with Nick Reich, Professor of Biostatistics, Director, COVID-19 Forecast Hub Director, Influenza Forecasting Center of Excellence at the University of Massachusetts Amherst School of Public Health & Health Sciences. Register for Zoom at hsph.me/IDEPI26.
011
CCDD @ccdd-hsph.bsky.social · 04/05/2026
Join us on THURS 5/7 at 1PM ET with Nick Reich, Professor of Biostatistics, Director, COVID-19 Forecast Hub Director, Influenza Forecasting Center of Excellence at the University of Massachusetts Amherst School of Public Health & Health Sciences. Register for Zoom at hsph.me/IDEPI26.
000
CCDD @ccdd-hsph.bsky.social · 30/04/2026
Join us on TODAY 4/30 at 1PM ET with Dan Neafsey, Associate Professor of Immunology and Infectious Diseases, at Harvard T.H. Chan School of Public Health, Associate Director of the Broad Institute's Genomic Center for Infectious Disease. Register for Zoom at hsph.me/IDEPI26.
111
CCDD @ccdd-hsph.bsky.social · 27/04/2026
Join us on THURS 4/30 at 1PM ET with Dan Neafsey, Associate Professor of Immunology and Infectious Diseases, at Harvard T.H. Chan School of Public Health, Associate Director of the Broad Institute's Genomic Center for Infectious Disease. Register for Zoom at hsph.me/IDEPI26.
121
CCDD @ccdd-hsph.bsky.social · 23/04/2026
Join us on TODAY 4/23 at 1PM ET with Gregg Gonsalves, Associate Professor, Epidemiology of Microbial Disease and the Public Health Modeling Unit, Yale School of Public Health; Yale Law School. Register for Zoom at hsph.me/IDEPI26. * *Note that we have shifted this seminar to be held via Zoom only*
120
CCDD @ccdd-hsph.bsky.social · 20/04/2026
Join us on THURS 4/23 at 1PM ET with Gregg Gonsalves, Associate Professor, Epidemiology of Microbial Disease and the Public Health Modeling Unit, Yale School of Public Health; Yale Law School. Register for Zoom at hsph.me/IDEPI26.
111
CCDD @ccdd-hsph.bsky.social · 15/04/2026
Join us on THURS 4/16 at 1PM ET with Michael Baker, Professor of Public Health, University of Otago, Wellington New Zealand. Register for Zoom at hsph.me/IDEPI26.
000
CCDD @ccdd-hsph.bsky.social · 09/04/2026
Today! ID Epi Seminar Series at 1PM ET with Virginia Pitzer, Professor of Epidemiology (Microbial Diseases), Yale School of Public Health. Register for Zoom at hsph.me/IDEPI26.
140
CCDD @ccdd-hsph.bsky.social · 03/04/2026
Save the Date for the ID Epi Seminar Series on THURS 4/9 at 1PM ET with Virginia Pitzer, Professor of Epidemiology (Microbial Diseases), Yale School of Public Health. Register for Zoom at hsph.me/IDEPI26.
141
CCDD @ccdd-hsph.bsky.social · 03/04/2026
Join us on Tues, May 5 for the 21st Freeman-Seage Symposium featuring presentations highlighting #IDEpi topics. This event honors two renowned faculty members, Drs. Freeman (left) and Seage (right) for their leadership and contributions to the field.
000
CCDD @ccdd-hsph.bsky.social · 30/03/2026
Join us on THURS 4/2 at 1PM ET with Katherine Siddle, Donna McGraw Weiss and Jason Weiss Assistant Professor of Molecular Microbiology and Immunology at Brown University. Register for Zoom at hsph.me/IDEPI26.
121
CCDD @ccdd-hsph.bsky.social · 26/03/2026
Join us TODAY! 1PM ET for our #IDEpi Seminar presented by Dr. Nicolas Menzies! Register for Zoom at hsph.me/IDEPI26.
000
CCDD @ccdd-hsph.bsky.social · 23/03/2026
Join us on Tues, May 5 for the 21st Freeman-Seage Symposium featuring presentations highlighting #IDEpi topics. This event honors two renowned faculty members, Drs. Freeman (left) and Seage (right) for their leadership and contributions to the field.
010
CCDD @ccdd-hsph.bsky.social · 20/03/2026
Join us THURS 3/26 at 1PM ET with Nicolas Menzies, Associate Professor of Global Health in the Department of Global Health and Population, Harvard Center for Health Decision Science and the Harvard CCDD for our #IDEpi Seminar Series. Register for Zoom at hsph.me/IDEPI26.
010
CCDD @ccdd-hsph.bsky.social · 12/03/2026
Join us TODAY! 1PM ET for our #IDEpi Seminar presented by Dr. Mauricio Santillana! Register for Zoom at hsph.me/IDEPI26.
000
CCDD @ccdd-hsph.bsky.social · 11/03/2026
Please join us on Tues, May 5 for our 21st Freeman-Seage Symposium featuring presentations highlighting #IDEpi topics. This event honors two renowned faculty members, Drs. Freeman (left) and Seage (right) for their leadership and contributions to the field.
010
CCDD @ccdd-hsph.bsky.social · 10/03/2026
Join us THURS 3/12 at 1PM ET with Mauricio Santillana, Professor of Physics and Electrical and Computer Engineering, Northeastern University and Adjunct Professor of Epidemiology, Harvard T.H. Chan School of Public Health for our #IDEpi Seminar Series. Register for Zoom at hsph.me/IDEPI26.
020
CCDD @ccdd-hsph.bsky.social · 05/03/2026
Join us TODAY! 1PM ET for our #IDEpi Seminar presented by Dr. Kenneth Mayer. Register for Zoom at hsph.me/IDEPI26
000
CCDD @ccdd-hsph.bsky.social · 02/03/2026
Join us March 5 at 1PM ET for our #IDEPI Seminar presented by Kenneth Mayer, Professor of Medicine, HMS; Professor of Global Health and Population, HSPH; Co-Director, The Fenway Institute and Medical Research Director, Fenway Health; Attending Physicians, BIDMC. Register for Zoom at hsph.me/IDEPI26.
010
CCDD @ccdd-hsph.bsky.social · 26/02/2026
Join us TODAY! 1PM ET for our #IDEpi Seminar presented by Molly Franke, Professor of Global Health and Social Medicine at Harvard Medical School for our #IDEpi Seminar Series. Register for Zoom at hsph.me/IDEPI26.
000
CCDD @ccdd-hsph.bsky.social · 23/02/2026
Join us THURS 2/26 at 1PM ET with Molly Franke, Professor of Global Health and Social Medicine at Harvard Medical School for our #IDEpi Seminar Series. Register for Zoom at hsph.me/IDEPI26.
010
Reposted by CCDD
Harvard Epidemiology @harvardepi.bsky.social · 11/02/2026
Join our team! We are #hiring for a #hybrid Senior Program Coordinator role! This position blends high-level operational management with research program coordination. Click on the link below to learn more and apply today! 👉 careers.harvard.edu/job/coordina...
careers.harvard.edu
Coordinator II (Senior Program Coordinator)
011
CCDD @ccdd-hsph.bsky.social · 12/02/2026
Join us TODAY at 1PM ET for our #IDEpi Seminar presented by Rachel Baker, Assistant Professor of Epidemiology, and Environment and Society at Brown University. Register for Zoom at hsph.me/IDEPI26
000
Reposted by CCDD
Harvard Epidemiology @harvardepi.bsky.social · 09/02/2026
We are #hiring! Are you a doctoral graduate passionate about using data and models to drive global health impact? Join us and @ccdd-hsph.bsky.social as a Postdoctoral Research Fellow in HIV Epidemiology and Modeling! 👉 Learn more and apply today below! academicpositions.harvard.edu/postings/15825
Members of the Center for Communicable Disease Dynamics (CCDD)
001
CCDD @ccdd-hsph.bsky.social · 09/02/2026
Join us THURS 2/12 at 1PM ET with Rachel Baker, Assistant Professor of Epidemiology, and Environment and Society at Brown University for our #IDEpi Seminar Series. Register for Zoom at hsph.me/IDEPI26.
000
CCDD @ccdd-hsph.bsky.social · 05/02/2026
Join us TODAY at 1PM ET for our #IDEpi Seminar presented by Robbie Goldstein, Commissioner of the Massachusetts Department of Public Health . Register for Zoom at hsph.me/IDEPI26
000
CCDD @ccdd-hsph.bsky.social · 03/02/2026
Join us THURS 2/5 at 1PM ET with Robbie Goldstein, Commissioner of the Massachusetts Department of Public Health for our #IDEpi Seminar Series. Register for Zoom at hsph.me/IDEPI26.
000
CCDD @ccdd-hsph.bsky.social · 09/01/2026
New publication! Comparing Strategies to Introduce Two New Antibiotics for Gonorrhea: A Modeling Study featuring authors: @mckline98.bsky.social, @kroster.bsky.social, @dhelekal.bsky.social, @rumpl-er.bsky.social, and @yhgrad.bsky.social. Read it here at bit.ly/3Z1Zplh
bit.ly
Comparing Strategies to Introduce Two New Antibiotics for Gonorrhea: A Modeling Study
Immediately introducing 2 new antibiotics to treat gonorrhea alongside 1 currently used therapy is more effective at minimizing drug resistance than holdin
035
CCDD @ccdd-hsph.bsky.social · 07/01/2026
New publication: Individual and population-level risk factors for new HIV infections among adults in Eastern and Southern Africa. Read from authors including @jeff-imai-eaton.bsky.social at bit.ly/3Ngxzz6
bit.ly
Individual and population-level risk factors for new HIV infections among adults in Eastern and Southern Africa - Nature Communications
The majority of incident HIV infections in Eastern and Southern Africa occur in the general population. Here, the authors harmonise data from eight open population-based cohort studies from six countr...
011
CCDD @ccdd-hsph.bsky.social · 06/01/2026
New preprint by PhD student Alex Zapf and @mlipsitch.bsky.social: Leveraging Limited Testing Data for Early Detection of Emerging Infectious Disease Outbreaks. Read it at bit.ly/3LmM83F
bit.ly
Leveraging Limited Testing Data for Early Detection of Emerging Infectious Disease Outbreaks
Early during emerging infectious disease outbreaks, case-based surveillance is constrained by limited test availability, diagnostic delays, and low clinical suspicion. Novel pathogens that mimic sympt...
010
Reposted by CCDD
Harvard T.H. Chan School of Public Health @hsph.harvard.edu · 19/12/2025
The mission of Harvard Chan School’s Center for Communicable Disease Dynamics (@ccdd-hsph.bsky.social) is to understand how infectious diseases emerge and spread, to train the next generation of scientists and public health officials, and to guide policy with rigorous science.
youtu.be
Learning how infectious diseases spread—and how to stop them
YouTube video by Harvard T.H. Chan School of Public Health
1116
CCDD @ccdd-hsph.bsky.social · 19/12/2025
New preprint: Taking injectable PrEP to scale: Optimising the value of lenacapavir for South Africa’s HIV response. Read more from authors including CCDD's @jeff-imai-eaton.bsky.social at bit.ly/4s6byD1
bit.ly
Taking injectable PrEP to scale: Optimising the value of lenacapavir for South Africa’s HIV response
Background Six-monthly injectable lenacapavir (LEN) for HIV pre-exposure prophylaxis (PrEP) has superior efficacy to oral tenofovir disoproxil fumarate/emtricitabine (TDF/FTC), and similar efficacy to...
001
CCDD @ccdd-hsph.bsky.social · 18/12/2025
New preprint by @pantbinod.bsky.social and Mauricio Santillana: The Paradox of Neglecting Changes in Behavior: How Standard Epidemic Models Misestimate Both Transmissibility and Final Epidemic Size. Read more at bit.ly/48NuLlq
bit.ly
The Paradox of Neglecting Changes in Behavior: How Standard Epidemic Models Misestimate Both Transmissibility and Final Epidemic Size
During epidemic outbreaks, populations adapt their behavior in response to disease burden, fundamentally altering transmission dynamics. Despite this, most compartmental models assume constant contact...
001
CCDD @ccdd-hsph.bsky.social · 18/12/2025
New preprint featuring CCDD authors Léa Cavalli, @bradfordptaylor.bsky.social, Beau Schaeffer, and @billhanage.bsky.social: SARS-CoV-2 Intra-host Variation Shows Evidence of Transmission and Convergent Evolution in a University Surveillance Cohort. Read it at bit.ly/4pLO4BO
bit.ly
SARS-CoV-2 Intra-host Variation Shows Evidence of Transmission and Convergent Evolution in a University Surveillance Cohort
Monitoring and understanding the transmission and evolution of SARS-CoV-2 remains a significant pub-lic health priority. Within-host genetic variation provides insight into viral evolution during infe...
132
CCDD @ccdd-hsph.bsky.social · 18/12/2025
U.S. gonorrhea rates fell in 2022 and 2023 after nearly a decade of increases—new paper by @kroster.bsky.social and @yhgrad.bsky.social maps out possible drivers, current evidence, and the data needed to understand what is causing the decline. Read more at bit.ly/4aWmc9i
bit.ly
Why are gonorrhea case rates declining in the US? A research agenda - PubMed
After nearly a decade of rising gonorrhea rates, the United States CDC reported a decline in infection rates for two years in a row in 2022 and 2023, especially among young adults. While this warrants cautious optimism that control measures have been successful, the reasons for the decline are unkno …
022
Reposted by CCDD
Nicola Low @nicolamlow.bsky.social · 12/12/2025
🧪 #gonorrhoea #mustread today's news about 2 new drugs to treat #gonorrhoea Thanks @kakape.bsky.social for opportunity to say, "The availability of two new drugs will lead to an important and likely controversial debate about how best to use them" And to @yhgrad.bsky.social @gardp.bsky.social
02310
Reposted by CCDD
PLOS Climate @plosclimate.org · 02/12/2025
New article by Natalie Baker and colleagues: "Evaluating the impact of a longitudinal, integrated climate change, health, and environment curriculum in undergraduate medical training at Harvard Medical School" journals.plos.org/climate/arti... @gaurabbasu.bsky.social @mckline98.bsky.social
journals.plos.org
Evaluating the impact of a longitudinal, integrated climate change, health, and environment curriculum in undergraduate medical training at Harvard Medical School
Climate change, air pollution, and ecological degradation are defining public health and health equity challenges of our time. Efforts to integrate and evaluate climate change curriculum in medical ed...
024
CCDD @ccdd-hsph.bsky.social · 08/12/2025
New publication from CCDD’s Léa Cavalli, @billhanage.bsky.social, & collaborators: bit.ly/4rF0Rr3
bit.ly
A 15-year Single-center Analysis of Late-onset Group B Streptococcus Infection Correlating Clinical Severity With Pathogen Virulence Determinants
Post-EOD GBS disease is associated with high rates of ICU admission and meningitis without a consistent link to pathogen virulence, suggesting that host re
112
Reposted by CCDD
Yonatan Grad @yhgrad.bsky.social · 26/11/2025
New preprint: with increasing resistance to ceftriaxone, the last recommended antibiotic for gonorrhea, we urgently need new drugs. Two--zoliflodacin & gepotdiacin--are up for approval by the FDA in Dec. Here we show a point mutation can result in cross-resistance. www.biorxiv.org/content/10.1...
biorxiv.org
Zoliflodacin and gepotidacin cross-resistance in Neisseria gonorrhoeae
Resistance to zoliflodacin, a first-in-class antibiotic for gonorrhea treatment, can occur through gyrBD429N, but this mutation's impact on fitness and resistance to other topoisomerase targeting drug...
23216
Reposted by CCDD
Yonatan Grad @yhgrad.bsky.social · 20/11/2025
Now out in @natcomms.nature.com Kudos to @tylim.bsky.social and @jameshay.bsky.social for a huge effort and thanks to all the collaborators for their hard work. See the final version here: www.nature.com/articles/s41...
nature.com
02011
CCDD @ccdd-hsph.bsky.social · 21/11/2025
Experimental mRNA flu vaccine is more effective than conventional flu shot, but causes more side effects. @billhanage.bsky.social weighs in at @cidrap.bsky.social. Read it here at bit.ly/4o8qIo0
bit.ly
Experimental mRNA flu vaccine is more effective than conventional flu shot, but causes more side effects
010
CCDD @ccdd-hsph.bsky.social · 21/11/2025
New study shows that shifts in SARS‑CoV‑2 Ct value distributions can help nowcast epidemic trends, revealing both strong potential and key real‑world limitations for Ct‑based surveillance. From CCDD alumni TY Lim & @jameshay.bsky.social and faculty @yhgrad.bsky.social at bit.ly/4o37EaN
bit.ly
Nowcasting epidemic trends using hospital- and community-based virologic test data - Nature Communications
Population-level distributions of SARS-CoV-2 viral load can correlate with epidemic trends. Here, the authors use viral loads to nowcast epidemic growth rates over two-week periods and investigate how...
0124
CCDD @ccdd-hsph.bsky.social · 14/11/2025
A modeling study led by @pantbinod.bsky.social, a CCDD-affiliated postdoc in MIGHTE LAB, Northeastern University, shows fungal biocontrol could reduce malaria-carrying mosquitoes by up to 90%—full story at Northeastern Global News bit.ly/3LDJma1
bit.ly
Want to eradicate malaria-bearing mosquitoes? Try fungus, this researcher says
A Northeastern postdoc has created a mathematical model that demonstrates how a fungal solution could control malarial mosquito populations.
021
CCDD @ccdd-hsph.bsky.social · 14/11/2025
New method for approximate Bayesian inference in extended latent Gaussian models uses adaptive Gauss-Hermite quadrature—improves accuracy & speed, demonstrated on small-area model for district-level epidemic estimates in Malawi. From authors incl CCDD’s @jeff-imai-eaton.bsky.social @ bit.ly/4oLH7QA
bit.ly
Fast approximate Bayesian inference of HIV indicators using PCA adaptive Gauss-Hermite quadrature
Naomi is a spatial evidence synthesis model used to produce district-level HIV epidemic indicators in sub-Saharan Africa. Multiple outcomes of policy …
010
CCDD @ccdd-hsph.bsky.social · 07/11/2025
Reporting on calibration methods in infectious disease models is inconsistent—our new PIPO framework & scoping review reveal gaps and offer guidance to boost transparency and reproducibility. Read more from CCDD authors Emmanuelle Dankwa, Léa Cavalli, @ruchitabalasub1.bsky.social @ bit.ly/4hPBw9g
bit.ly
Calibration of transmission-dynamic infectious disease models: A scoping review and reporting framework
Author summary Calibration, the identification of parameter values so that model outcomes are consistent with observed data or other evidence, is often employed in the process of obtaining model resul...
111
CCDD @ccdd-hsph.bsky.social · 06/11/2025
New paper from Mozambique Instituto Nacional de Saúde and collaborators including CCDD’s @jeff-imai-eaton.bsky.social on findings from the INSIDA 2021 household survey—highlighting heterogeneous epidemic burden across districts and high burden in coastal port cities. bit.ly/47QFBpg
bit.ly
<em>Journal of the International AIDS Society</em> | IAS HIV Research Journal | Wiley Online Library
Introduction Accurate information is needed to prioritize programmes and resources that address gaps in the HIV response. We examined findings from the 2021 Mozambique Population-based HIV Impact As...
000
CCDD @ccdd-hsph.bsky.social · 05/11/2025
New study led by Salome Kuchukhidze, @mintturonn.bsky.social & @jeff-imai-eaton.bsky.social finds that over 1 in 4 US women living w/ HIV reported past-year intimate partner violence, with pregnant women at a particularly high risk. bit.ly/47YX2F2
bit.ly
111